[. . . ] [. . . ] All in a very heavy metal chassis MADE IN THE USA. ROLLS Professional Direct Box GROUND LIFT SWITCH ATTENUATOR SWITCH 1/4" INPUTS XLR OUTPUTS DESCRIPTION INPUT(S): 1/4" unbalanced jacks for receiving line or instrument level signals. OUTPUT(S): XLR male and female for connection to a mixer board or other balanced input device. GROUND LIFT SWITCH: In the lift position, the ground connection to the XLR jack is disconnected from the chassis. Reduces the input signal by SPECIFICATIONS: Frequency response: Max Output level: Input Impedance: Output Impedance: Weight: Size: 20 - 20kHz +/- 1 dB +4 dBm 50K Ohms 600 Ohms. [. . . ] [. . . ]